CN107027166B - A kind of sending method, device and the node of the synchronizing information of node - Google Patents
A kind of sending method, device and the node of the synchronizing information of node Download PDFInfo
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- CN107027166B CN107027166B CN201610069001.0A CN201610069001A CN107027166B CN 107027166 B CN107027166 B CN 107027166B CN 201610069001 A CN201610069001 A CN 201610069001A CN 107027166 B CN107027166 B CN 107027166B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/002—Mutual synchronization
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/003—Arrangements to increase tolerance to errors in transmission or reception timing
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Abstract
The present invention provides a kind of sending method of the synchronizing information of node, device and nodes, are related to the communications field.The sending method includes: the first receiving node with priority, receives the synchronizing information that there is the sending node of priority to send by the first synchronous subframe；First receiving node obtains in advance for the configuration information of its configuration, and the configuration information includes: the control information that first receiving node can send synchronize information to the second receiving node of at least one of predetermined system；First receiving node sends synchronize information at least one second receiving node according to the control information, by the second synchronous subframe.This programme, receiving node select suitable synchronous subframe to synchronize the transmission of information, avoid can not achieve the problem of mutually listening between the node of ad eundem as far as possible, improve the reliability of system interior joint communication according to the transmission situation of sending node.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of sending method, device and the section of the synchronizing information of node
Point.
Background technique
In LTE D2D (Long Term Evolution Device-to-Device, long term evolution-equipment is to equipment),
Only 2 synchronous subframes are used to support in covering, part covers and the synchronizing sequence SLSS (Sidelink of covering exterior node
Synchronisation Signal, Sidelink synchronization signal) with synchronous configuration information.
Under normal conditions, covering interior nodes receive system broadcast information SIB18, obtain synchronous transmission opportunity and SLSS
(Sidelink Synchronisation Signal) id covers interior same all UE of cell (User Equipment, user
Terminal) synchronizing information it is identical.Covering exterior node, (synchroballistic indicates according to preconfiguration parameters syncOffsetIndicator1
1) or syncOffsetIndicator2 (synchroballistic instruction 2) selection sends the subframe of SLSS.
Wherein covering exterior node is divided into following situations:
1) part overlay node: being to send the covering internal reference for synchronizing subframe and receiving with reference to UE to cover interior nodes
UE is different；
2) covering exterior node is part overlay node with reference to UE: being to send synchronous subframe with reference to UE with part overlay node
It is different with reference to UE from the part covering received；
3) covering exterior node is not part overlay node with reference to UE: not referring to UE to cover exterior node, sends synchronous subframe
It is different from the covering External Reference UE received；
4) independent synchronization source: non-selected any UE, which is used as, refers to UE, selects 1 in 2 synchronous subframes of pre-configuration at random
A be used as sends synchronous subframe.
In LTE D2D, cover in same cell node by (eNodeB, evolved Node B referred to as, the base station in LTE eNB
Title) pass through system information configuration and send subframe, occupy 1 identical synchronous subframe and send synchronizing information.Covering is outer to be considered
To half-duplex problem, transmitting-receiving node cannot be sent in the same subframe, so 2 synchronizations are arranged when R12D2D system is pre-configured
Subframe.Such as the configuration example that Fig. 1 is 2 synchronous subframes in LTE D2D system, synchronous subframe 1 (Subframe1) is for sending
With the synchronizing information of covering exterior node in covering, synchronous subframe 2 (Subframe2) believes for the synchronous of transmitting portion overlay node
Breath.
(vehicle to vehicle, vehicle is to vehicle and vehicle to Device, and vehicle is to equipment by LTE V2X
Abbreviation) in system, since vehicle node has the ability for directly receiving GNSS signal, the vehicle node for directly obtaining GNSS signal can
To send SLSS and synchronous configuration information as synchronisation source.It should be noted that there are 2 kinds of synchronous priority for LTE V2X system
Processing mode:
1, it is based on GNSS (Global Navigation Satellite System, Global Navigation Satellite System) or
The synchronization of GNSS-equivalent (being equal to Global Navigation Satellite System), synchronous priority are from high to low；
Priority 1 (grade 1): 0 jump set of GNSS signal is defeated: directly obtaining together from GNSS or GNSS-equivalent
Step；
Priority 2 (grade 2): 1 jump set of GNSS signal is defeated: can not directly obtain from GNSS or GNSS-equivalent
Must be synchronous, synchronization is obtained from the synchronous node of GNSS or GNSS-equivalent is directly obtained；
Priority 3 (grade 3): other situations.
2, based on the synchronization of eNB, node shares 4 priority, and according to priority height arranges are as follows:
Priority 1a (grade 1a): the UE synchronous with eNB in covering；
Priority 1 (grade 1): covering is outer, and synchronous UE is directly obtained from GNSS or GNSS-equivalent；
Priority 2 (grade 2): covering is outer directly to obtain synchronization from GNSS or GNSS-equivalent, from
The synchronous node of GNSS or GNSS-equivalent is directly obtained to be synchronized；
Priority 3 (grade 3): other situations.
For the synchronization based on GNSS or GNSS-equivalent, if not increasing new synchronization subframe, 2 are still used
A synchronous subframe, it is understood that there may be problem, as shown in Fig. 2, 3 node C of synchronization level and part covering (Partial in covering
Coverage) the node D of synchronization level 3 can only select synchronous subframe 1, due to semiduplex limitation, in this case, covering
Interior 3 node C of synchronization level and the node D of part covering synchronization level 3 can not mutually listen communication all in the state of transmission, between node.
For the synchronization based on eNB, due to semiduplex limitation, the nodes between different synchronous priority cannot be below
Same subframe is sent:
Priority 1a and 1,2,3 node of Priority；
Priority 1 and Priority 2；
Priority 2 and Priority 3；
If only using 2 subframes, it is assumed that Priority1a node is sent in synchronous subframe 1, and Priority1 is in same step
Frame 2 is sent, then Priority2 node can only be sent in synchronous subframe 1, causes Priority2 node that can not receive
The synchronization signal of Priority1a.
And as shown in figure 3, synchronous reference UE is the part overlay node B and synchronous reference of Priority 1a node A
Synchronization priority of the UE between the node C of the node A of Priority 2 is all Priority 3, but due to semiduplex limit
System, can not mutually listen communication between node B and node C.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sending method of the synchronizing information of node, device and node,
To solve in LTE V2X system, because of semiduplex limitation, existing synchronous sub-frame configuration mode can have the section of ad eundem
It can not mutually be listened the problem of communication between point.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of sending method of the synchronizing information of node, packet
It includes:
The first receiving node with priority, being received by the first synchronous subframe, there is the sending node of priority to send
Synchronizing information；
First receiving node obtains in advance for the configuration information of its configuration, and the configuration information includes: described first
Receiving node can send synchronize information to the control information of the second receiving node of at least one of predetermined system；
First receiving node sends synchronize information at least one according to the control information, by the second synchronous subframe
A second receiving node.
Further, the priority of the sending node is greater than or equal to the priority of first receiving node, and institute
The priority for stating the first receiving node is greater than or equal to the priority of second receiving node.
Further, the control information includes: the second sending cycle that first receiving node sends synchronizing information
And first receiving node and at least one between its second receiving node with equal priority transmission sequence
Control information；Wherein,
Second sending cycle of first receiving node is equal to N times of the first sending cycle of the sending node,
In, N is the integer more than or equal to 1.
Further, first receiving node sends synchronous letter by the second synchronous subframe according to the control information
It ceases and includes: to the step of at least one second receiving node
First receiving node passes through institute according to the transmission sequential control information according to second sending cycle
It states the second synchronous subframe and sends synchronize information at least one second receiving node.
Further, first receiving node send synchronizing information transmission sequential control information and at least one second
The transmission sequential control information that receiving node sends synchronizing information is different.
Further, the control information includes: that the third for the synchronizing information for sending the node in the predetermined system is same
Step frame.
Further, the synchronous subframe of the third, which is used to send in the predetermined system, removes the first receiving node, second
The synchronizing information of other nodes outside receiving node and sending node, and the synchronous subframe of the third is for sending other nodes
The synchronizing information of the node of middle pre-set priority.
Further, the first synchronization subframe, the second synchronization subframe subframe synchronous with the third are different each other
Synchronization subframe.
Further, in the predetermined system further include: except the sending node and first receiving node and institute
Other nodes except the second receiving node are stated, the priority of other nodes is greater than the priority of the sending node.
It further, include multiple nodes, and multiple nodes priority having the same in other nodes；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and
First priority is greater than the second priority, and the second priority is greater than the priority of the sending node.
The embodiment of the present invention provides a kind of sending device of the synchronizing information of node, comprising:
Receiving module, for for the first receiving node with priority, received by the first synchronous subframe have it is preferential
The synchronizing information that the sending node of grade is sent；
Module is obtained, it is described to match confidence for obtaining for first receiving node in advance for the configuration information of its configuration
Breath includes: the control that first receiving node can send synchronize information to the second receiving node of at least one of predetermined system
Information processed；
Sending module is sent for being first receiving node according to the control information by the second synchronous subframe
Synchronizing information gives at least one second receiving node.
Further, the priority of the sending node is greater than or equal to the priority of first receiving node, and institute
The priority for stating the first receiving node is greater than or equal to the priority of second receiving node.
Further, the control information includes: the second sending cycle that first receiving node sends synchronizing information
And first receiving node and at least one between its second receiving node with equal priority transmission sequence
Control information；Wherein,
Second sending cycle of first receiving node is equal to N times of the first sending cycle of the sending node,
In, N is the integer more than or equal to 1.
Further, the sending module is specifically used for:
Passed through according to second sending cycle according to the transmission sequential control information for first receiving node
Described second synchronous subframe sends synchronize information at least one second receiving node.
Further, first receiving node send synchronizing information transmission sequential control information and at least one second
The transmission sequential control information that receiving node sends synchronizing information is different.
Further, the control information includes: that the third for the synchronizing information for sending the node in the predetermined system is same
Step frame.
Further, the synchronous subframe of the third, which is used to send in the predetermined system, removes the first receiving node, second
The synchronizing information of other nodes outside receiving node and sending node, and the synchronous subframe of the third is for sending other nodes
The synchronizing information of the node of middle pre-set priority.
Further, the first synchronization subframe, the second synchronization subframe subframe synchronous with the third are different each other
Synchronization subframe.
Further, in the predetermined system further include: except the sending node and first receiving node and institute
Other nodes except the second receiving node are stated, the priority of other nodes is greater than the priority of the sending node.
It further, include multiple nodes, and multiple nodes priority having the same in other nodes；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and
First priority is greater than the second priority, and the second priority is greater than the priority of the sending node.
The embodiment of the present invention provides a kind of node, comprising:
Processor；And the memory being connected by bus interface with the processor, the memory is for storing
The processor used program and data when executing operation, are stored when processor is called and executed in the memory
Program and data when, realize following functional module:
Receiving module, for for the first receiving node with priority, received by the first synchronous subframe have it is preferential
The synchronizing information that the sending node of grade is sent；
Module is obtained, it is described to match confidence for obtaining for first receiving node in advance for the configuration information of its configuration
Breath includes: the control that first receiving node can send synchronize information to the second receiving node of at least one of predetermined system
Information processed；
Sending module is sent for being first receiving node according to the control information by the second synchronous subframe
Synchronizing information gives at least one second receiving node.
The beneficial effects of the present invention are:
Above scheme, receiving node select suitable synchronous subframe to synchronize letter according to the transmission situation of sending node
The transmission of breath avoids can not achieve the problem of mutually listening communication between the node of ad eundem as far as possible, improves in system and save
The reliability of point communication.
Detailed description of the invention
Fig. 1 shows sub-frame configuration schematic diagrames synchronous in existing LTE D2D system；
Fig. 2 indicates the existing synchronization sub-frame configuration schematic diagram synchronous based on GNSS；
Fig. 3 indicates the existing synchronization sub-frame configuration schematic diagram synchronous based on eNB；
Fig. 4 indicates the flow diagram of the sending method of the synchronizing information of the node of the embodiment of the present invention one；
Fig. 5 indicates the flow diagram of the sending method of the synchronizing information of the node of the embodiment of the present invention two；
Fig. 6 indicates to carry out the synchronization sub-frame configuration schematic diagram synchronous based on GNSS using the method for embodiment two；
Fig. 7 indicates to carry out the synchronization sub-frame configuration schematic diagram synchronous based on eNB using the method for embodiment two；
The synchronization sub-frame configuration schematic diagram synchronous based on GNSS is carried out Fig. 8 shows the method using embodiment three；
Fig. 9 indicates to carry out the synchronization sub-frame configuration schematic diagram synchronous based on eNB using the method for embodiment three；
Figure 10 indicates the module diagram of the sending device of the embodiment of the present invention four；
Figure 11 indicates the structural schematic diagram of the node of the embodiment of the present invention five.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in detail.
The present invention is directed in existing LTE V2X system, because of semiduplex limitation, existing synchronous sub-frame configuration mode meeting
There are problems that mutually listening communication between the node of ad eundem, sending method, the device of a kind of synchronizing information of node are provided
And node.
Embodiment one
As shown in figure 4, the sending method of the synchronizing information of the node of the embodiment of the present invention one, comprising:
Step 41, with the first receiving node of priority, the transmission with priority is received by the first synchronous subframe
The synchronization signal that node is sent；
It should be noted that the sending node is the reference UE of first receiving node, i.e., the first receiving node is to connect
The synchronizing information of the reference mode received is reference, determines that itself sends the synchronization subframe of synchronizing information.And institute in the present embodiment
The priority for stating sending node is greater than or equal to the priority of first receiving node.
Step 42, first receiving node obtains in advance as the configuration information of its configuration；
It should be noted that the configuration information include: first receiving node can send synchronize information to it is default
The control information of the second receiving node of at least one of system；
Wherein, which is LTE V2X system.
Step 43, first receiving node sends synchronizing information by the second synchronous subframe according to the control information
Give at least one second receiving node.
It should be noted that the priority of first receiving node is greater than or equal to the preferential of second receiving node
Grade.And in order to guarantee to carry out normal communication between the first receiving node and sending node, the described second synchronous subframe with it is described
First synchronous subframe is different synchronous subframe.
It should be noted that first receiving node is the node that the grade in LTE V2X system is 3 in the present embodiment,
And sending node is the node that grade is 2, the second receiving node is the node that grade is 3, by using to the first receiving node
Synchronization subframe configuration, realize that the synchronization signal of itself can be sent to and its with ad eundem by the first receiving node
Two receiving nodes improve so that the first receiving node and can also mutually listening between its node with same levels communicates
The reliability of system communication.
Embodiment two
As shown in figure 5, the sending method of the synchronizing information of the node of the embodiment of the present invention two, comprising:
Step 41, with the first receiving node of priority, the transmission with priority is received by the first synchronous subframe
The synchronizing information that node is sent；
It should be noted that the priority of the sending node is greater than or equal to the priority of first receiving node,
The sending node is the reference UE of first receiving node.
Step 42, first receiving node obtains in advance for the configuration information of its configuration, and the configuration information includes: institute
Synchronization signal can be sent to the control information of the second receiving node of at least one of predetermined system by stating the first receiving node；
Specifically, the control information include: first receiving node send the second sending cycle of synchronizing information with
And first receiving node and at least one between its second receiving node with equal priority transmission sequence control
Information processed；Wherein,
Second sending cycle of first receiving node is equal to N times of the first sending cycle of the sending node,
In, N is the integer more than or equal to 1.
It should be noted that different grades of node sends synchronization signal in the respective period respectively, and for the ease of
Carry out sending cycle control, usually with the sending cycle of the sending node of highest priority be use in the prior art it is original
Synchronizing cycle, then lower than sending node priority node sending cycle be predetermined number synchronizing cycle；For example, most
The sending cycle of the node of high priority is synchronizing cycle, the sending cycle of the node of a grade lower than highest priority are as follows: a
× synchronizing cycle, the sending cycle of the node of two grades lower than highest priority are as follows: b × synchronizing cycle, wherein a >=b, and
In order to facilitate the statistics for carrying out sending cycle, a and b are the integer greater than 1.
Step 431, first receiving node is believed according to second sending cycle according to the transmission sequential control
Breath sends synchronize information at least one second receiving node by the described second synchronous subframe.
It should be noted that in order to guarantee the first receiving node and at least one and its second receiving with same levels
May be implemented mutually to listen communication between node, first receiving node send the transmission sequential control information of synchronization signal at least
The transmission sequential control information that one the second receiving node sends synchronization signal is different.
It should be noted that when transmission control information herein can be specific transmission of each node in sending cycle
Between, for example, node 1 is identical with the sending cycle of node 2, node 1 synchronizes the hair of information at the first moment of sending cycle
It send, and node 2 synchronizes the transmission of information at the last one moment of sending cycle；By being sent in sending cycle
The control of time, ensure that the node with ad eundem can different moments send synchronization signal, realize different nodes it
Between mutually listen communication.
It should be noted that because there are two kinds of synchronous priority processing modes in LTE V2X system, therefore, the present embodiment
In the predetermined system in further include: except the sending node and first receiving node and second receiving node
Except other nodes, the priority of other nodes is greater than the priority of the sending node.
It specifically, include multiple nodes in other nodes, and multiple nodes priority having the same (indicates LTE
Include 3 priority levels based on the priority processing mode that GNSS or GNSS-equivalent are synchronous in V2X system, by height to
It is low to be followed successively by Priority 1, Priority 2 and Priority 3)；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and
First priority is greater than the second priority, and the priority that the second priority is greater than the sending node (indicates in LTE V2X system
Include 4 priority levels based on the synchronous priority processing mode of eNB, be followed successively by from high to low Priority 1a,
Priority 1, Priority 2 and Priority 3).
It should be noted that the main implementation of the present embodiment are as follows: according to the sequence of synchronous priority, setting is not
Different transmission sync intervals on the basis of the synchronizing cycle of same priority, when increasing different priorities node transmission synchronizing information
The randomness of machine, increases a possibility that mutually listening between node.
Below as the present embodiment the method, to the synchronization subframe based on different synchronous priority processing modes on node
Configuration be specifically described.
One, synchronous based on GNSS or GNSS-equivalent
It includes: Subframe1 (synchronous subframe 1) and Subframe2 (same that node, which sends synchronization subframe used in synchronization signal,
Step frame 2), the configuration mode of the synchronization subframe of the node of different synchronization priority are as follows:
1, the node of Priority 1
The transmission of information is synchronized with random selection one in synchronous subframe 2 in synchronous subframe 1, and synchronizes week each
Interim to send synchronizing information, i.e. the sending cycle of the node of Priority 1 is equal to synchronizing cycle；
2, the node of Priority 2
The synchronization subframe that subframe synchronous from the synchronizing information of synchronous reference UE place is different is selected, as 2 section of Priority
The synchronization subframe of point；
Every m synchronizing cycle sends, and m is the integer greater than 1, i.e., the node sending cycle of Priority 2 is equal to m × same
Step period；
3, the node of Priority 3
The node of all Priority 3 sends synchronizing information every n synchronizing cycle, and n is the integer greater than 1, n >=m,
I.e. the node sending cycle of Priority 3 is equal to n × synchronizing cycle；
Synchronous sub-frame configuration is divided into following situations:
When the synchronous reference UE of the node of Priority 3 be Priority 2 and Priority 3 node when, selection with
The different synchronization subframe of synchronous subframe where the synchronizing information of synchronous reference UE sends synchronous letter as 3 node of Priority
The synchronization subframe of breath；
When the node of Priority 3 is independent synchronization source: in synchronous subframe 1 in synchronous subframe 2, randomly choosing 1
Subframe is as synchronous subframe；
It should be noted that the configuration of the synchronization subframe for the above node, synchronizes week when the sending cycle of node is greater than
When the phase, 1 transmission synchronizing cycle as this node is randomly choosed in multiple synchronizing cycles of sending cycle, it is same in the transmission
Selection synchronizes the transmission of information with the synchronous subframe that this node is adapted in step period, i.e., the different nodes of ad eundem is same
Walking information has different transmission sequences.
As shown in fig. 6, in practical application, it is synchronous (assuming that synchronizing cycle is based on GNSS or GNSS-equivalent
After the completion of node 50ms) synchronizes sub-frame configuration according to the method for the present embodiment, the configuring condition of each node is specifically such as
Under:
In A1, covering and covering outer Priority 1 node A and E are highest priorities, and each 50ms synchronizing cycle is sent out
It send, and is sent in synchronous subframe 1.
In A2, covering and outer Priority 2 node B and F are covered, synchronous reference UE is the node A and E of Priority1,
Synchronous subframe must be different from Priority1 node A and E, and synchronous subframe 2 is selected to send, and sending cycle is 2 synchronizing cycles,
That is 2*50=100ms；And rear 50ms (Index=1) of the Priority2 node B random selection in 100ms sync interval in covering
Synchronization subframe 2 send；Outer Priority2 node F random selection is covered in the preceding 50ms (Index=0) of 100ms sync interval
Synchronization subframe 2 send, i.e., the synchronizing information of node F prior to node B send.
Priority3 node C in A3, covering, synchronous reference UE are the node B of Priority2 in covering, and synchronous subframe must
Must be different from interior Priority2 node B is covered, select synchronous subframe 1 to send, sending cycle is 4 synchronizing cycles, i.e. 4*50=
200ms；Node C sends synchronizing information in the synchronization subframe 1 of the 1st 50ms (Index=0) of 200ms at random.
A4, covering outer Priority3 node D and G, synchronous reference UE is the node F for covering outer Priority2, same to step
Frame must be different from outer Priority2 node F is covered, and synchronous subframe 1 is selected to send, and sending cycle is 4 synchronizing cycles, i.e. 4*
50=200ms；The receiving node D and G of 2 Priority3 randomly chooses the 2nd 50ms (Index=1) in 200ms respectively
Synchronizing information is sent with the synchronous subframe 1 of the 3rd 50ms (Index=2).
It is to send synchronous subframe that A5, the outer independent synchronization source node H of covering, which randomly choose synchronous subframe 2, and sending cycle is 4
Synchronizing cycle, i.e. 4*50=200ms；Node H is sent in the synchronization subframe 2 of the 2nd 50ms (Index=1) of 200ms at random.
A6, the outer 3 node I of Priority of covering receive 3 node H of independent synchronization source Priority and in the 3rd 50ms
(Index=2) it is only to cover outer 3 node I of Priority selection for the synchronizing information that synchronization subframe 1Priority3 node G is sent
Vertical synchronous source node H is synchronous reference UE, then sends synchronizing information using synchronous subframe 1, and sending cycle is 4 synchronizing cycles,
That is 4*50=200ms；The synchronization subframe 1 that node I randomly chooses the 4th 50ms (Index=3) of 200ms sends synchronizing information.
Two, synchronous based on eNB
It includes: synchronous subframe 1 and synchronous subframe 2 that node, which sends synchronization subframe used in synchronization signal, and different synchronizing is excellent
The configuration mode of the synchronization subframe of the node of first grade is as follows:
1, the node of Priority 1a:
It is configured according to the system information of eNB, may be synchronous subframe 1 or synchronous subframe 2, and in each synchronizing cycle
Synchronizing information is all sent, i.e. the sending cycle of the node of Priority 1a is equal to synchronizing cycle；
2,1 Priority:
If the node of Priority 1 is Priority 1a, selection there are the grade of synchronous reference UE and synchronous reference UE
The synchronization subframe different from subframe synchronous where the synchronizing information of synchronous reference UE, the same step as 1 node of Priority
Frame；Otherwise 1 subframe of random selection is used as synchronous subframe in synchronous subframe 1 or synchronous subframe 2；
Every X synchronizing cycle sends, and X is the integer greater than 1, i.e., the node sending cycle of Priority 1 is equal to X × same
Step period；
3,2 Priority:
The synchronization subframe that subframe synchronous from the synchronizing information of synchronous reference UE place is different is selected, as 2 section of Priority
The synchronization subframe of point；
Every Y synchronizing cycle sends, and Y is the integer greater than 1, Y >=X, i.e. the node sending cycle of Priority 2 is equal to
Y × synchronizing cycle；
4,3 Priority:
The node of all Priority 3 sends synchronizing information every Z synchronizing cycle, and Z is the integer greater than 1, Z >=Y,
I.e. the node sending cycle of Priority 3 is equal to Z × synchronizing cycle；
Synchronous sub-frame configuration is divided into following situations:
When the synchronous reference node of the node of Priority 3 is Priority 1a, 2 Priority and Priority 3
Node when, the selection synchronization subframe different with synchronization subframe where the synchronizing information of synchronous reference UE, as Priority 3
The synchronization subframe of node；
When the node of Priority 3 is independent synchronization source: in 2 synchronous subframes, randomly choosing 1 subframe as same
Step frame；
It should be noted that the configuration of the synchronization subframe for the above node, synchronizes week when the sending cycle of node is greater than
When the phase, 1 transmission synchronizing cycle as this node is randomly choosed in multiple synchronizing cycles of sending cycle, it is same in the transmission
Selection synchronizes the transmission of information with the synchronous subframe that this node is adapted in step period, i.e., the different nodes of ad eundem is same
Walking information has different transmission sequences.
As shown in fig. 7, the node based on eNB synchronous (assuming that synchronizing cycle is 50ms) is according to this implementation in practical application
After the completion of the method for example synchronizes sub-frame configuration, the configuring condition of each node is specific as follows:
The synchronization sub-frame configuration situation of each node is as follows:
Priority1a node A is highest priority in B1, covering, and each 50ms synchronizing cycle is sent, it is assumed that same
Step frame 1 is sent.
B2, the outer 1 node E of Priority of covering are the highest priorities outside covering, and synchronous reference UE is Priority 1a
When, synchronous subframe must be different from Priority1a node A in covering, select synchronous subframe 2 to send, sending cycle is same for 2
Step period, i.e. 2*50=100ms, the synchronization subframe 2 randomly choosed in the rear 50ms (Index=1) of 100ms sync interval are sent out
It send；
B3, the outer 2 node F of Priority of covering, synchronous reference UE is the node E for covering outer Priority1, synchronous subframe
Must be different from outer Priority1 node E is covered, select synchronous subframe 1 to send, sending cycle is 4 synchronizing cycles, i.e. 4*50
=200ms.Cover outer Priority2 node F randomly choose 200ms sync interval the 1st 50ms (Index=0) it is same
Step frame 1 is sent；
B4, the outer Priority3 node G of covering, synchronous reference UE is the node F for covering outer Priority2, and synchronous subframe must
Must be different from outer Priority2 node F is covered, select synchronous subframe 2 to send, sending cycle is 6 synchronizing cycles, i.e. 6*50=
300ms.The receiving node C and G of 2 Priority3 is respectively at random in the 2nd 50ms (Index=1) of 300ms and the 3rd
The synchronization subframe 2 of 50ms (Index=2) is sent, i.e., the synchronizing information of node C is sent prior to node G.
B5, the outer independent synchronization source node H random selection subframe 1 of covering are to send synchronous subframe, and sending cycle is 6 synchronizations
Period, i.e. 6*50=300ms；Node H randomly chooses the transmission of synchronization subframe 1 in the 1st 50ms (Index=0) of 300ms.
B6, the outer 3 node D of Priority of covering receive 3 node H of independent synchronization source Priority and in the 3rd 50ms
(Index=2) it is independent to cover outer 3 node D of Priority selection for the synchronizing information that subframe 2Priority3 node C and G is sent
Synchronisation source H is synchronous reference UE, then sending synchronous subframe is 2, and sending cycle is 6 synchronizing cycles, i.e. 6*50=300ms；Section
The synchronization subframe 2 that point D randomly chooses the 5th 50ms (Index=4) of 300ms is sent.
It should be noted that existing between the node for solving ad eundem by the configuration mode of the synchronous subframe of such node
Cannot mutually listen the problem of communication, improve the reliability of system communication.
Embodiment three
Continue the sending method as shown in figure 4, the synchronizing information of the node of the embodiment of the present invention three, comprising:
Step 41, with the first receiving node of priority, the transmission with priority is received by the first synchronous subframe
The synchronization signal that node is sent；
It should be noted that the priority of the sending node is greater than or equal to the priority of first receiving node,
The sending node is the reference UE of first receiving node.
Step 42, first receiving node obtains in advance as the configuration information of its configuration；
It should be noted that the configuration information include: first receiving node can send synchronize information to it is default
The control information of the second receiving node of at least one of system；
The control information includes: the synchronous subframe of third for the synchronizing information for sending the node in the predetermined system.
Step 43, first receiving node sends synchronizing information by the second synchronous subframe according to the control information
Give at least one second receiving node.
It should be noted that the first synchronization subframe, the second synchronization subframe subframe synchronous with the third are each other
Different synchronous subframe.
The present embodiment carries out the transmission control of the synchronizing information of LTE V2X system interior joint by using three synchronous subframes
System, effective solution synchronize the transmission of information using same synchronous subframe because of multiple nodes, and causing cannot be mutual between node
The problem of listening communication.
Because the node in LTE V2X system has multiple priority levels, the distribution of subframe is synchronized for convenience, it is described
The synchronous subframe of third, which is specifically used for sending in the predetermined system, removes the first receiving node, the second receiving node and transmission section
The synchronizing information of other nodes outside point, and the synchronous subframe of the third is used to send the node of pre-set priority in other nodes
Synchronizing information.
It is therefore, described default in the present embodiment and because there are two kinds of synchronous priority processing modes in LTE V2X system
In system further include: other sections in addition to the sending node and first receiving node and second receiving node
Point, the priority of other nodes are greater than the priority of the sending node.
It specifically, include multiple nodes in other nodes, and multiple nodes priority having the same (indicates LTE
Include 3 priority levels based on the priority processing mode that GNSS or GNSS-equivalent are synchronous in V2X system, by height to
It is low to be followed successively by Priority 1, Priority 2 and Priority 3, wherein the synchronous subframe of newly-increased third is used for sending node
For the synchronizing information of Priority 1)；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and
First priority is greater than the second priority, and the priority that the second priority is greater than the sending node (indicates in LTE V2X system
Include 4 priority levels based on the synchronous priority processing mode of eNB, be followed successively by from high to low Priority 1a,
Priority 1, Priority 2 and Priority 3, wherein newly-increased third synchronizes subframe for sending node and is
The synchronizing information of Priority 1).
It should be noted that the main implementation of the present embodiment are as follows: newly increase one on the basis of original synchronous subframe
A synchronous subframe, and the synchronization subframe newly increased is used to send the synchronizing information of the node of pre-set priority.
Configuration below as the present embodiment the method, to the synchronization subframe based on different synchronous priority processing modes
It is specifically described.
One, synchronous based on GNSS or GNSS-equivalent
It includes: Subframe1 (synchronous subframe 1) and Subframe2 (same that node, which sends synchronization subframe used in synchronization signal,
Step frame 2) with newly-increased Subframe3 (synchronous subframe 3), the configuration side of the synchronization subframe of the node of different synchronization priority
Formula are as follows:
1, the node of Priority 1
Synchronizing information is sent in increased synchronous subframe 3；
2, the node of Priority 2
Due to needing to receive the synchronizing information of Priority 1,1 is randomly choosed in synchronous subframe 1 or synchronous subframe 2
Synchronous subframe synchronizes the transmission of information；
3, the node of Priority 3
If the synchronous reference UE of the node of the Priority 3 is the node of Priority 2 or Priority3, in synchronization
In subframe 1 or synchronous subframe 2 and the synchronization subframe different from subframe synchronous where the synchronizing information received, 1 is randomly choosed
Subframe synchronizes the transmission of information as synchronous subframe；
4, independent synchronization source
In 3 synchronous subframes, the transmission that 1 subframe synchronizes information as synchronous subframe is randomly choosed.
As shown in figure 8, in practical application, based on GNSS or GNSS-equivalent synchronous node according to the present embodiment
Method synchronize sub-frame configuration after the completion of, the configuring condition of each node is specific as follows:
The node A and E of C1, Priority 1 sends synchronizing information in synchronous subframe 3, covers the node of interior Priority 2
B is sent in synchronous subframe 1, covers the node of node F Priority3 in synchronizing the transmission of subframe 2, covering of outer Priority 2
C is sent in synchronous subframe 2, and the node D that part covers Priority3 is sent in synchronous subframe 1, so that being all Priority3's
Also communication can be mutually listened between node C and D；
It is synchronous with 3 node D's of Priority that 3 node G of Priority outside C2, covering receives 2 node F of Priority
It after information, selects the node F of Priority 2 as synchronous reference UE, then synchronizes the transmission of information using synchronous subframe 1.
It is to send synchronous subframe that C3, the outer independent synchronization source node H of covering, which randomly choose synchronous subframe 2, when covering is outer
3 node I of Priority receives 3 node H of independent synchronization source Priority and sends with the Priority3 node G in synchronous subframe 2
Synchronizing information, cover outer 3 node I of Priority and select independent synchronization source for synchronous reference UE, then use synchronization subframe 1 into
The transmission of row synchronizing information.
Two, synchronous based on eNB
It includes: synchronous subframe 1, synchronous subframe 2 and newly-increased same step that node, which sends synchronization subframe used in synchronization signal,
The configuration mode of frame 3, the synchronization subframe of the node of different synchronization priority is as follows:
1, the node of Priority 1a
It is configured according to the system information of eNB, may be synchronous subframe 1 or synchronous subframe 2；
2, the node of Priority 1
Synchronizing information is sent in increased synchronous subframe 3；
3, the node of Priority 2
Select 1 subframe as synchronous subframe in synchronous subframe 1 or synchronous subframe 2, with the synchronizing information institute received
It is different in synchronous subframe；
4, the node of Priority 3
If the synchronous reference UE of the node of the Priority 3 is Priority 1a, Priority2 or 3 section of Priority
Point, in synchronous subframe 1 or synchronous subframe 2, the synchronization subframe different from subframe synchronous where the synchronizing information received, at random
Select 1 subframe as synchronous subframe；
5, independent synchronization source
In 3 synchronous subframes, the transmission that 1 subframe synchronizes information as synchronous subframe is randomly choosed.
As shown in figure 9, synchronizing subframe according to the method for the present embodiment based on the synchronous node of eNB in practical application
After the completion of configuration, the configuring condition of each node is specific as follows:
There was only the node A of Priority 1a in D1, covering, is sent in synchronous subframe 2；Part covers the section of Priority3
Point B selects the node A of Priority1a for synchronous reference UE, sends synchronizing information in synchronous subframe 1.
D2, the node E for covering outer Priority 1 are sent in synchronous subframe 3, cover the node F of outer Priority 2 same
Step frame 1 is sent；It is synchronous with 2 node F's of Priority that 3 node C of Priority outside covering receives 3 node B of Priority
It after information, selects the node of Priority 2 as synchronous reference UE, then synchronizes the transmission of information using synchronous subframe 2；
After 3 node G of Priority outside covering receives the synchronizing information of 2 node F of Priority, synchronized using synchronous subframe 2
The transmission of information.
D3, the node D for covering outer Priority 3 receive the synchronizing information of Priority3 in synchronous subframe 2, and selection synchronizes
Subframe 1 synchronizes the transmission of information.
D4, outer independent synchronization source node H random selection subframe 2 is covered to send synchronous subframe, as the outer Priority of covering
3 node I receive the synchronous letter of 3 node H of independent synchronization source Priority with the Priority3 node D transmission in synchronous subframe 1
Breath covers outer 3 node I of Priority and selects independent synchronization source for synchronous reference UE, then synchronizes letter using synchronous subframe 1
The transmission of breath.
It should be noted that, by increasing a synchronous subframe, being increased between different grades of node in the present embodiment
Synchronization subframe optional range, can effectively solve the problems, such as it is existing between node cannot mutually listen communication, improve LTE V2X
The reliability of system communication.
It should be noted that above embodiments of the present invention carry out sending synchronizing information between node by providing two ways
The distribution of synchronous subframe, the method for salary distribution of the synchronization subframe of embodiment two are mode one, the distribution of the synchronization subframe of embodiment three
Mode is that mode two can increase synchronous sub-frame configuration Warning Mark, to the same of control node in practical applications in a base station
The synchronization configuration mode of step frame.When system resource occupancy is high, and the synchronous convergence of node is of less demanding, respectively saved in system
Point can synchronize the configuration of subframe according to mode one；It is wanted when system resource occupancy is not high, and to the synchronous convergence of node
When asking higher, each node can synchronize the configuration of subframe according to mode two in system.
Example IV
As shown in Figure 10, the embodiment of the present invention provides a kind of sending device 100 of the synchronizing information of node, comprising:
Receiving module 101, for for the first receiving node with priority, received by the first synchronous subframe have it is excellent
The synchronizing information that the sending node of first grade is sent；
Module 102 is obtained, for obtaining in advance for first receiving node as the configuration information of its configuration, the configuration
Information includes: that first receiving node can send synchronize information to the second receiving node of at least one of predetermined system
Control information；
Sending module 103 passes through the second synchronous subframe hair for being first receiving node according to the control information
Synchronizing information is sent to give at least one second receiving node.
Specifically, the priority of the sending node is greater than or equal to the priority of first receiving node, and described
The priority of first receiving node is greater than or equal to the priority of second receiving node.
Optionally, the control information include: first receiving node send the second sending cycle of synchronizing information with
And first receiving node and at least one between its second receiving node with equal priority transmission sequence control
Information processed；Wherein,
Second sending cycle of first receiving node is equal to N times of the first sending cycle of the sending node,
In, N is the integer more than or equal to 1.
Further, the sending module 103 is specifically used for:
Passed through according to second sending cycle according to the transmission sequential control information for first receiving node
Described second synchronous subframe sends synchronize information at least one second receiving node.
Further, first receiving node send synchronizing information transmission sequential control information and at least one second
The transmission sequential control information that receiving node sends synchronizing information is different.
Optionally, the control information includes: that the third for the synchronizing information for sending the node in the predetermined system is synchronous
Subframe.
Specifically, the synchronous subframe of the third be used to send in the predetermined system except the first receiving node, second connect
The synchronizing information of node and other nodes outside sending node is received, and the synchronous subframe of the third is for sending in other nodes
The synchronizing information of the node of pre-set priority.
Further, the first synchronization subframe, the second synchronization subframe subframe synchronous with the third are different each other
Synchronization subframe.
Further, in the predetermined system further include: except the sending node and first receiving node and institute
Other nodes except the second receiving node are stated, the priority of other nodes is greater than the priority of the sending node.
It further, include multiple nodes, and multiple nodes priority having the same in other nodes；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and
First priority is greater than the second priority, and the second priority is greater than the priority of the sending node.
It should be noted that the embodiment of the sending device is to send dress correspondingly with above-mentioned sending method embodiment
It sets, all implementations can also reach identical suitable for the embodiment of the sending device in above-mentioned sending method embodiment
Technical effect.
Embodiment five
As shown in figure 11, the present embodiment provides a kind of nodes, comprising:
Processor 111；And the memory 113 being connected by bus interface 112 with the processor 111, it is described to deposit
Reservoir 113 is for storing the processor 111 used program and data when executing operation, when processor 111 calls simultaneously
When executing the program and data stored in the memory 113, following functional module is realized:
Receiving module, for for the first receiving node with priority, received by the first synchronous subframe have it is preferential
The synchronizing information that the sending node of grade is sent；
Module is obtained, it is described to match confidence for obtaining for first receiving node in advance for the configuration information of its configuration
Breath includes: the control that first receiving node can send synchronize information to the second receiving node of at least one of predetermined system
Information processed；
Sending module is sent for being first receiving node according to the control information by the second synchronous subframe
Synchronizing information gives at least one second receiving node.
The processor 111 is also used to realize the function of any one other module of above-mentioned sending device.
It should be noted that node described in the present embodiment can be the vehicle belonged in LTE V2X system, user's end
End, or for constructing the equipment etc. of LTE V2X system.
It will be understood by those skilled in the art that realize above-described embodiment all or part of step can by hardware come
It completes, relevant hardware can also be indicated by computer program to complete, the computer program includes executing above-mentioned side
The instruction of some or all of step of method；And the computer program can store in a readable storage medium storing program for executing, storage medium
It may be any type of storage medium.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (17)
1. a kind of sending method of the synchronizing information of node characterized by comprising
The first receiving node with priority receives the same of the sending node transmission with priority by the first synchronous subframe
Walk information；
First receiving node obtains in advance for the configuration information of its configuration, and the configuration information includes: first reception
Node can send synchronize information to the control information of the second receiving node of at least one of predetermined system；
First receiving node according to the control information, by the second synchronous subframe send synchronize information at least one the
Two receiving nodes；
The control information includes: the synchronous subframe of third for the synchronizing information for sending the node in the predetermined system；
The synchronous subframe of the third, which is used to send in the predetermined system, removes the first receiving node, the second receiving node and hair
The synchronizing information of other nodes outside node is sent, and the synchronous subframe of the third is for sending pre-set priority in other nodes
The synchronizing information of node.
2. the sending method of the synchronizing information of node according to claim 1, which is characterized in that the sending node it is excellent
First grade is greater than or equal to the priority of first receiving node, and the priority of first receiving node is greater than or equal to institute
State the priority of the second receiving node.
3. the sending method of the synchronizing information of node according to claim 2, which is characterized in that the control packet
Include: first receiving node send synchronizing information the second sending cycle and first receiving node and at least one with
Transmission sequential control information between its second receiving node with equal priority；Wherein,
Second sending cycle of first receiving node is equal to N times of the first sending cycle of the sending node, wherein N
For the integer more than or equal to 1.
4. the sending method of the synchronizing information of node according to claim 3, which is characterized in that first receiving node
According to the control information, the step of subframe sends synchronize information at least one second receiving node packet is synchronized by second
It includes:
First receiving node passes through described according to the transmission sequential control information according to second sending cycle
Two synchronous subframes send synchronize information at least one second receiving node.
5. the sending method of the synchronizing information of node according to claim 3 or 4, which is characterized in that described first receives
The transmission that node sends the transmission sequential control information of synchronizing information and at least one second receiving node sends synchronizing information is suitable
It is different that sequence controls information.
6. the sending method of the synchronizing information of node according to claim 1, which is characterized in that the first same step
Frame, described second synchronize subframe subframe synchronous with third synchronization subframe different each other.
7. the sending method of the synchronizing information of node according to claim 1 or 3, which is characterized in that the predetermined system
In further include: other nodes in addition to the sending node and first receiving node and second receiving node,
The priority of other nodes is greater than the priority of the sending node.
8. the sending method of the synchronizing information of node according to claim 7, which is characterized in that wrapped in other nodes
Include multiple nodes, and multiple nodes priority having the same；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and first
Priority is greater than the second priority, and the second priority is greater than the priority of the sending node.
9. a kind of sending device of the synchronizing information of node characterized by comprising
Receiving module, for for the first receiving node with priority, being received by the first synchronous subframe to have priority
The synchronizing information that sending node is sent；
Module is obtained, for obtaining in advance for first receiving node as the configuration information of its configuration, the configuration information packet
Include: first receiving node can send synchronize information to the control letter of the second receiving node of at least one of predetermined system
Breath；
Sending module is sent by the second synchronous subframe and is synchronized for being first receiving node according to the control information
Information gives at least one second receiving node；
The control information includes: the synchronous subframe of third for the synchronizing information for sending the node in the predetermined system；
The synchronous subframe of the third, which is used to send in the predetermined system, removes the first receiving node, the second receiving node and hair
The synchronizing information of other nodes outside node is sent, and the synchronous subframe of the third is for sending pre-set priority in other nodes
The synchronizing information of node.
10. the sending device of the synchronizing information of node according to claim 9, which is characterized in that the sending node
Priority is greater than or equal to the priority of first receiving node, and the priority of first receiving node is greater than or equal to
The priority of second receiving node.
11. the sending device of the synchronizing information of node according to claim 10, which is characterized in that the control packet
Include: first receiving node send synchronizing information the second sending cycle and first receiving node and at least one with
Transmission sequential control information between its second receiving node with equal priority；Wherein,
Second sending cycle of first receiving node is equal to N times of the first sending cycle of the sending node, wherein N
For the integer more than or equal to 1.
12. the sending device of the synchronizing information of node according to claim 11, which is characterized in that the sending module tool
Body is used for:
It is first receiving node according to second sending cycle, according to the transmission sequential control information, by described
Second synchronous subframe sends synchronize information at least one second receiving node.
13. the sending device of the synchronizing information of node according to claim 11 or 12, which is characterized in that described first connects
Receive the transmission for sending sequential control information and at least one second receiving node transmission synchronizing information that node sends synchronizing information
Sequential control information is different.
14. the sending device of the synchronizing information of node according to claim 9, which is characterized in that the first same step
Frame, described second synchronize subframe subframe synchronous with third synchronization subframe different each other.
15. the sending device of the synchronizing information of the node according to claim 9 or 11, which is characterized in that the default system
In system further include: other sections in addition to the sending node and first receiving node and second receiving node
Point, the priority of other nodes are greater than the priority of the sending node.
16. the sending device of the synchronizing information of node according to claim 15, which is characterized in that in other nodes
Including multiple nodes, and multiple nodes priority having the same；Or
Other nodes include multiple nodes with the first priority and multiple nodes with the second priority, and first
Priority is greater than the second priority, and the second priority is greater than the priority of the sending node.
17. a kind of node characterized by comprising
Processor；And the memory being connected by bus interface with the processor, the memory are described for storing
Processor used program and data when executing operation, when processor calls and executes the journey stored in the memory
When sequence and data, following step is realized:
The first receiving node with priority receives the same of the sending node transmission with priority by the first synchronous subframe
Walk information；
First receiving node obtains in advance for the configuration information of its configuration, and the configuration information includes: first reception
Node can send synchronize information to the control information of the second receiving node of at least one of predetermined system；
First receiving node according to the control information, by the second synchronous subframe send synchronize information at least one the
Two receiving nodes；
Wherein, the control information includes: the synchronous subframe of third for the synchronizing information for sending the node in the predetermined system；
The synchronous subframe of the third, which is used to send in the predetermined system, removes the first receiving node, the second receiving node and hair
The synchronizing information of other nodes outside node is sent, and the synchronous subframe of the third is for sending pre-set priority in other nodes
The synchronizing information of node.
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| CN110139241B (en) * | 2018-02-09 | 2022-04-08 | 大唐移动通信设备有限公司 | Synchronization method, terminal and network equipment |
| WO2020029026A1 (en) | 2018-08-06 | 2020-02-13 | 北京小米移动软件有限公司 | Vehicle-to-everything synchronization method and device |
| CN111586623B (en) * | 2019-02-15 | 2024-06-18 | 华为技术有限公司 | Communication method and communication device |
| CN111787635B (en) * | 2019-04-04 | 2022-10-14 | 中国信息通信研究院 | Relay uplink access channel configuration method and device |
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